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APU won't start

Scheduled Pinned Locked Moved 146 Professional
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  • K Offline
    K Offline
    kowalski89
    wrote on last edited by
    #1

    Hi!

    I'm following the checklist, L Inner pump on etc but APU always trips after couple of seconds once it reaches 100%. Looks like bug to me but maybe someone got similar issues?

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  • MarkM Offline
    MarkM Offline
    Mark JF Staff
    wrote on last edited by
    #2

    @kowalski89 Do you perhaps have any "APU" control assignments set up that could be causing the APU to shut down? The 146 uses the "APU STARTER" and "APU OFF" control assignments to start/stop the APU.

    There can also be instances in the simulator where if an aircraft is loaded and unloaded a lot of times in a session, SimConnect can become a bit unstable and that can cause the engines and the APU to shut down almost as soon as they reach idle. I've only ever seen this occur during development where we have been restarting the aircraft 20+ times, but if this is the case a restart of MSFS should solve that issue.

    Mark - Just Flight

    Just Flight Development Assistant

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  • F Offline
    F Offline
    Fess
    wrote on last edited by
    #3

    I am getting the same thing. No fuel pressure which is causing the APU and the engines to not start even though the plane has plenty of fuel and the pumps are on. Even if I select ready for takeoff nothing will start up due to no fuel pressure.

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  • K Offline
    K Offline
    kowalski89
    replied to Mark on last edited by
    #4

    @Mark

    Hi Mark!

    I didn’t have any hardware assignments related to APU or engine start switches etc. and problem occurred even after reinstall and first flight of the start of sim.

    But good news- I seem to fix the issue by updating GSX and editing ini file (Hardware line)- unfortunately cannot point out what really fixed the issue as I did both in the same time but my guess would be on conflict with coutl programme that run in background of GSX as before update this process kept „hanging” preventing MSFS to properly close

    MarkM 1 Reply Last reply
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  • MarkM Offline
    MarkM Offline
    Mark JF Staff
    replied to kowalski89 on last edited by
    #5

    @kowalski89 Interesting! Thanks for letting us know. I also had GSX installed when I had this occur during testing, so I'm wondering now if that was related to GSX too...

    We'll make a note of this to see if we can find any way of reliably reproducing this and to see if there are any potential fixes we could implement on our end.

    Mark - Just Flight

    Just Flight Development Assistant

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